Optical Absorption Enhancement in Amorphous Silicon Films and Solar Cell Precursors Using the Aluminum-Induced Glass Texturing Method

Table 1

AM1.5G weighted average absorptance 𝐴_𝑤 of the four samples of Figure 3, integrated over the wavelength range 400–800 nm. Also shown are the absorptances of the bare (i.e., noncoated) glass sheets.

Thickness of the intrinsic a-Si:H film (nm)	Absorptance of planar sample (%)	Absorptance of textured sample (%)	Absolute increase (%abs)
0	0.2	2.3	N.A.
115	29.1	35.7	6.6
270	37.1	42.7	5.6